Berthold zeitschel



(No Model.)

2 Sheets-Sheet 1. B. ZEITSOHEL.

REGENERATIVE GAS LAMP.

No. 430,723. Patented June 24, 1890.

Elf/- Film Inwn 1'07? 2 Sheets-Sheet 2.

(No Model.)

B. ZEITSCHEL.

REGENERATIVE GAS LAMP.

No. 430,723. Patented June 24, 1890.

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UNITED STATES PATENT ()FFIcE. Y

BERTHOLD ZEITSOHEL, OF BERLIN, GERMANY.

REG EN ERATIVE GAS-LAM P.

SPECIFICATION forming part of Letters Patent No. 430,723, dated June 24,1890.

Application filed June 12, 1889. Serial No. 314,022- (No model.)Patented in Belgium June 6, 1889, No. 86,542; in Norway June 6,1889,1T0. 1,390; in $witzer1and June 6,1889, No.1,089; in England June6, 1889,1101 9,412, and in Spain June6, 1889,

To all whom it may concern:

Be it known that I, BER'rHoLn ZEITSCHEL, a subject of the King ofPrussia and German Emperor, and a resident of Berlin, have inventedcertain new and useful Improvements in Regenerative Gas-Lamps, (forwhichI have obtained patents in Switzerland, No. 1,089, dated June 6,1889; in England, No. 9,412, dated June 6, 1889; in Spain,No. 9,666,dated June 6, 1889; in Belgium, No. 86,542, dated June 6, 1889; inNorway, No. 1,390, dated June v6, 1889, and for which I have filedapplications in Germany, May 25, 1889; in Austria-Hungary on June 6,1889, and in Russia May 25, 1889,) of which the following is an exactdescription.

My invention relates to an improved construction of lamps having twocircular burners, the manner of the burners and air-inlet co-operatingto avoid the formation of smokeblack, thus effecting a more thoroughcombustion of the gas.

In order to make my invention more clear, I refer to the accompanyingdrawings, in which similar letters denote similar parts throughout thedifferent views.

Figure 1 is a vertical section through the middle of the lamp. Fig. 2 isa horizontal section through the lamp along the line a E in Fig. 1.

The gas is led by means of supply-pipe 19 into the chamber it, formed bycover so, screwed into the under part a. Into this under piece :0 arefixed tubes at a and b b h, constituting the outer and inner burners.This chamber at is screwed onto the cast piece y, adapted to form thevarious passages s, s s and s for the air-circulation. The form of thecast piece 'y will be clearly seen in Fig. 2. To the lower part of piecey is attached ring Z), encircling the outer burner 17. To the under sideof the bottom of chamber at is fixed cylinder y, having holes 8 s, andto the lower end of which ring a is fixed, encircling the inner burnera. g

The cast piece g which serves to regulate the air-circulation, isscrewed into ring 00', to which cap 00 is also attached. The frame R,

for holding glass 0", is hinged to ring as, which also containssheet-metal ring 00 The sheetmetal cap. or shade w is suspended on thecast piece y. The sheet-metal cap m together with ring a and shade as,causes the air to circulate to the burners in a zigzag manner, wherebythe same is more thoroughly warmed. The air enters through holes h h inring 00'. To the top part of piece y is fixed the chimney c of the lamp.

The air enters the lamp through the openings h h in ring 00, passes thenover ring on and under ring-shade 00 .through the passages s s s s inthe cast piece y, from whence a part of the air passes downward betweenthe rings a and b for supplying the outer ring-burner, while a partpasses on through the holes .9 sin piece y downward inside the tube a inorder to supply the burner a. As will be seen, the air then passes inthe direction of the arrows through the canals z z in the cast piece yand up the chimney.

The advantage of alamp of this construction is that by means of the twocircular flames burning one within the other, as shown and described,the air being led to the burners will be compressed to a certain extent,or rather retained between the lines of circumference of the inner andouter flames, and again between the outer flame and lower edge of ringb, so that only as much air as is necessary for the complete combustionof the gas will circulate, and thus the formation of smoke-black in thelamp will be prevented. On the other hand, by a too-rapid circulation ofthe air the combustion of the gas is imperfeet, burns extravagantly,creating smokeblack, and thereby stopping up the flues or air-passagesand causing them to become smaller, and the lamp will in consequenceburn badly after having been in use a short time.

Having now particularly described my invention, what I claim is Inregenerative gas-lamps, the combination of the inner circle of tubes act a, outer circle 1) b I), both ending in and receiving their gassupplyfrom chamber at, having supply-pipe 13, piece 00 with cc'v'ei' 00, ringon", having air In witness whereof I haYe hereunto set my inlets h h h,piece .y, having air-inlets s 8, hand in presence of two wltnesses.cylinders y, having air-inlets s 8, cylinders a and b, sheet-metal ring00 shade w, cap 00 BERTHOLD ZEITSOHEL' 5 chimney c, and glass ring andglass 1", in the Witnesses:

manner and for the purpose substantially as B. ROI, described. THEODORH'EESE.

